package com.example.a0904;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.view.animation.TranslateAnimation;
import android.widget.Button;
import android.widget.ImageView;
import android.view.View.OnClickListener;

public class TweennedAnimation extends AppCompatActivity {
    private Button rotateButton = null;
    private Button scaleButton = null;
    private Button alphaButton = null;
    private Button translateButton = null;
    private ImageView image = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.tweenned_animation);
        rotateButton = (Button)findViewById(R.id.rotateButton);
        scaleButton = (Button)findViewById(R.id.scaleButton);
        alphaButton = (Button)findViewById(R.id.alphaButton);
        translateButton = (Button)findViewById(R.id.translateButton);
        image = (ImageView)findViewById(R.id.image);
        rotateButton.setOnClickListener(new RotateButtonListener());
        scaleButton.setOnClickListener(new ScaleButtonListener());
        alphaButton.setOnClickListener(new AlphaButtonListener());
        translateButton.setOnClickListener(new TranslateButtonListener());
    }
    class RotateButtonListener implements OnClickListener{
        public void onClick(View v) {
            AnimationSet animationSet = new AnimationSet(true);
            RotateAnimation rotateAnimation = new RotateAnimation(0, 360,
                    Animation.RELATIVE_TO_SELF,  0.5f,
                    Animation.RELATIVE_TO_SELF,  0.5f);
            rotateAnimation.setDuration(2000);
            animationSet.addAnimation(rotateAnimation);
            image.startAnimation(animationSet);
        }
    }
    class ScaleButtonListener implements OnClickListener{
        public void onClick(View v) {
            AnimationSet animationSet = new AnimationSet(true);
            ScaleAnimation scaleAnimation = new ScaleAnimation(
                    0,   1f,  0,  1f, Animation.RELATIVE_TO_SELF,
                    0.5f,  Animation.RELATIVE_TO_SELF,  0.5f);
            scaleAnimation.setDuration(2000);
            animationSet.addAnimation(scaleAnimation);
            image.startAnimation(animationSet);
        }
    }
    class AlphaButtonListener implements OnClickListener{
        public void onClick(View v) {
            //创建一个AnimationSet对象，参数为Boolean型，
            AnimationSet animationSet = new AnimationSet(true);
            //创建一个AlphaAnimation对象，参数从完全不透明度，到完全透明
            AlphaAnimation alphaAnimation = new AlphaAnimation(1, 0);
            //设置动画执行的时间
            alphaAnimation.setDuration(2000);
            //将alphaAnimation对象添加到AnimationSet当中
            animationSet.addAnimation(alphaAnimation);
            //使用ImageView的startAnimation方法执行动画
            image.startAnimation(animationSet);
        }
    }
    class TranslateButtonListener implements OnClickListener{
        public void onClick(View v) {
            AnimationSet animationSet = new AnimationSet(true);
            TranslateAnimation translateAnimation =
                    new TranslateAnimation(
                            Animation.RELATIVE_TO_SELF, 0f,
                            Animation.RELATIVE_TO_SELF, 0.5f,
                            Animation.RELATIVE_TO_SELF, 0f,
                            Animation.RELATIVE_TO_SELF, 0.5f);
            translateAnimation.setDuration(2000);
            animationSet.addAnimation(translateAnimation);
            image.startAnimation(animationSet);
        }
    }
}
